Date Submitted: [September 2007] Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Respond to Call for Intent in IEEE802.15.4c Task Group] Date Submitted: [September 2007] Source: [Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel] Company: [Freescale Semiconductor, Integration Associates, Atmel] Address: [2100 E. Elliot Rd, MD: EL542, Tempe, AZ 85284, USA; 16 - 18 West Street, Reigate, Surrey RH2 9BS, United Kingdom; 110 Pioneer Way, Unit L., Mountain View, CA 94041, Königsbrücker Strasse 61, 01099 Dresden, Germany] Voice:[1-480-413-5413, 1-408-904-2705, +44 1737 227728, 1-650-969-4100x155, +49 351 6523436, +49 351 6523428], E-Mail:[clinton.powell@freescale.com, kuor-hsin.chang@freescale.com, pbeecher@integration.com, hdr@integration.com, michael.schmidt@atmel.com, frank.poegel@atmel.com] Re: [ IEEE 802.15.4c ] Abstract: [Response to 4c Task Group call for intent to share our vision about what could be a successful 802.15.4c standard.] Purpose: [To encourage discussion.] Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

Chinese Regulations Related to LR WPAN The Radio Management Bureau (the regulatory body for radio usage in China) of China Information Department approved the following frequency bands and TX power limitation for the operation of WPAN equipment 430 ~ 432 MHz, 433 ~ 434.79 MHz Transmitting power limit: 10mW (e.i.r.p) Occupied bandwidth: ≤ 400 kHz 779 ~ 787 MHz No requirements for occupied bandwidth The Radio Management Bureau of China Information Department does not object the ISM frequency band for the operation of WPAN equipment 2400 ~ 2483.5 MHz The frequency offset allowed is 75KHz which is equivalent to 31.25ppm (for 2.4GHz) Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY 8MHz total bandwidth available Reuse of IEEE 802.15.4-2006 Optional 902~928MHz band PHY Chip rate: 1000 kchip/sec Modulation: O-QPSK Data rate: 250 kb/sec Symbol rate: 62.5 ksymbol/sec Spreading code: 16-ary quasi-orthogonal Will provide 4 channels in 8MHz BW, with a channel spacing of 2MHz Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY PN Code Characteristics: Binary codes PN Code 1 is the circular shift of PN Code 0 by 2 PN Code 8 is the complex conjugate of PN Code 0 No DC component Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY PN Codes & Symbol to Chip Mapping: Data symbol (decimal) (b0 b1 b2 b3) Chip values (c0 c1 … c14 c15) 0 0 0 0 0 0 1 1 1 1 1 0 0 0 1 0 0 1 0 1 1 1 0 0 0 0 1 0 0 1 1 1 1 1 0 0 0 1 0 0 1 2 0 1 0 0 0 1 0 1 0 0 1 1 1 1 1 0 0 0 1 0 3 1 1 0 0 1 0 0 1 0 1 0 0 1 1 1 1 1 0 0 0 4 0 0 1 0 0 0 1 0 0 1 0 1 0 0 1 1 1 1 1 0 5 1 0 1 0 1 0 0 0 1 0 0 1 0 1 0 0 1 1 1 1 6 0 1 1 0 1 1 1 0 0 0 1 0 0 1 0 1 0 0 1 1 7 1 1 1 0 1 1 1 1 1 0 0 0 1 0 0 1 0 1 0 0 8 0 0 0 1 0 1 1 0 1 0 1 1 0 1 1 1 0 0 0 0 9 1 0 0 1 0 0 0 1 1 0 1 0 1 1 0 1 1 1 0 0 10 0 1 0 1 0 0 0 0 0 1 1 0 1 0 1 1 0 1 1 1 11 1 1 0 1 1 1 0 0 0 0 0 1 1 0 1 0 1 1 0 1 12 0 0 1 1 0 1 1 1 0 0 0 0 0 1 1 0 1 0 1 1 13 1 0 1 1 1 1 0 1 1 1 0 0 0 0 0 1 1 0 1 0 14 0 1 1 1 1 0 1 1 0 1 1 1 0 0 0 0 0 1 1 0 15 1 1 1 1 1 0 1 0 1 1 0 1 1 1 0 0 0 0 0 1 Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY O-QPSK Modulation: Prevents zero-crossing phase transition Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY Pulse Shaping Filter Raised cosine pulse shaping with roll-off factor r = 0.8 To meet the -36dBm out-of-band rejection requirements as specified by Chinese regulatory Added benefit of same (-36dBm) rejection in-band as well Addition of pulse shaping filter results in a crest factor (Peak to Average Ratio) of ~ 1dB leads to moderate linearity requirements of the PA Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

779~787MHz Band Alternative PHY Tx Power Spectrum with Pulse Shaping Filter Meeting -36dBm Requirement Using pseudo random chip sequence with 40 ppm frequency offset and transmit power of 10 dBm Measured with a 100 kHz resolution BW Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

Performance Comparison to Current CWPAN PHY Proposal (AWGN) DSSS = CWPAN M-PSK PHY Proposal. COBI16 = O-QPSK PHY w/ Half-Sine Pulse Shaping. Actual pulse shape using raised cosine w/ r=0.8 will result in equivalent performance if not better. The performance difference in AWGN is < 0.2dB Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

Performance Comparison to Current CWPAN PHY Proposal (Flat Fading) The performance under flat fading is almost identical Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

Performance Comparison to Current CWPAN PHY Proposal (Fading) The performance difference under fading channel is < 0.35 dB Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)

Advantages of This PHY Proposal Maximizes reuse of the IEEE 802.15.4-2006 standard and avoids reinventing the wheel. Leverages a known/proven/realizable PHY standard/solution. An IEEE 802.15.4-2006 compliant device could easily add a 779-787 MHz band O-QPSK PHY, providing instant multiple sources for the marketplace. A CWPAN compliant device with this PHY could easily incorporate the differences to comply with IEEE802.15.4-2006 and sell to markets outside China. Submission Clint Powell, Kuor-Hsin Chang, Phil Beecher, Henk de Ruijter, Michael Schmidt, Frank Poegel (Freescale, Integration, Atmel)